Lister-plow.



A. SHEARER.'

LISTER PLOW. APPLICATION FILED 1AN.,2. 1911.

Patented Mar.12, 1918.

2 SHEETS-SHEET l.

@my .aE-...gg Eig A. SHEARH. 'LSTER PLOW. APPLlcAnoN man 1AN..2. |911.

Patented Mar. 12, 1918.

2 SHEETS-SHEET 2.

are

ANDREW SEEARER, OF FRANKFORT, KANSAS.

LISTER-PLOW.

Speciiication of Letters Patent.

Patented Mar. 12, 1218,

Application led January 2, 1917. Serial No. 140,131.

To all whom it may concern:

Be it known that I, ANDREW SHEARER, a citizen of the United States, anda resident of Frankfort, in the county of Marshall and State of Kansas,have invented certain new and useful Improvements in Lister-Flows, ofwhich the following is a specification, reference being had to theaccompanying drawings.

My invention relates to lister plows of the general type shown in patentto me No. 894,802, granted July 28, 1908, and it has for one of itsobjects the provision of a new and improved form and arrangement ofparts for connecting the beam of the plow to the framework and forconnecting the draft means to said parts, whereby in operation theplow-body will assume and maintain as nearly as possible the sameangular position relative tothe frame whether plowing deep or shallow.It is another object of my invention to provide a construction in whichthe plow may be handled more readily bythe operator, this result beingattained in the construction employed by me by reason of the draft beingapplied both to the frame and to the plow-beam, permitting the moreready control of the plow-body relative to the frame. It is anotherobject of my invention to provide a construction by reason of which theforward one of the beam-supporting members becomes an evener and suctiondevice combined in one, preventing longitudinal rocking of the beam,insuring correct suction of the plow-body and ease of entering theground, and relieving the lifting lever of the strain of pulling theframe through the medium of the bail. It is another object of myinvention to improve devices of this type in sundry details hereinafterpointed out. The preferred means by which I have .accomplished myseveral objects are illustrated in the drawings and are hereinafterspecifically described. That which I believe to be new and desire tocover by this application is set forth in the claims.

In the drawings Figure 1 is a top or plan View of a lister plowembodying my improved construction; and

Fig. 2 is a side view of the plow shown in Fig. 1, with one of thesupporting wheels removed therefrom for the sake of clearness ofillustration.

In the drawings,10 indicates a frame member comprising side barsconverging toward their rear ends which are joined together on oppositesides of a bracket 11. A cross-bar 12, preferably in the form of anarch, has its endportions connected to the side bars of the frame 10 bymeans of brackets 13--14. A second cross-bar 15, also preferably in theform of an arch, is secured in position upon the cross-bar 12, the outerends of the cross-bar 15 being connected by means of diagonally-disposedbrace-bars 16-17 with the adjacent portions of the frame member 10. Axlemembers 18-19 are revolubly mounted at opposite sides of the machine,each of such axle members being journaled in a suitable bracket 2Osecured between the outer ends of thei diagonally-extending brace-bars16-17 and in the adjacent one of the brackets it- 14. The axle members18-19 are provided with carrying wheels 21-22 upon offset portions ofsuch axle members.

rIhe position of the carrying wheels 21422 is controlled by meanscomprising a lever 23 fixedly mounted upon a rock-shaft 24 which isjournaled upon the crossbars 12 and 15. The lower end of the lever 23 isconnected by means of a link 25 with the end of an arm 26 formed with orotherwise fixedly connected to the axle member 19. The rock-shaft 24 isconnected with the axle member 18 by means of a link 27 pivotallyconnected to arms 28-29 formed with or otherwise fixedly connected tothe rock-shaft 24 and the axle member 18 respectively. rlhe constructionand arrangement are such that when the lever 23 is given a strokerelative to the framework, one of the wheels'21-22 is moved upwardrelative to the frame while the other is moved downward. The lever 23 isadapted to be held in adjusted position by a suitable engagement with asegmental rack 30 carried by the framework.

The bracket 11 at the rear end of the frame has pivotally mounted in ita suitable axle member 31, upon the lower end of which caster wheels 32of any suitable type are journaled. The bracket 11 also serves tosupport a seat 33for an operator within suitable reach of the lever 23,stirrups 31 being provided upon the frame for the feet of the operator.

The construction land arrangement of the parts so far described aresubstantially the same as that shown and described in an application byWilliam S. Graham, for patent upon lister plows, Serial No. 31,156, and

such subject-matter forms no part of my invention.

A double mold-board lister plow-body 35 is suitably secured upon therear end of a plow-beam 36. The beam 36 is journaled by means ofsuitable brackets 87 upon an offset portion of'a bail 38 which is journaled between the side bars of the frame member 10. The bail 3S isadapted to be turned for moving the plow-body 35 up and down relative tothe frame 10 by means of alever 39 finedupon one end of said bail, saidlever being adjustable along a segmental rack 40 carried Vby theframework. A coiled spring 41"V is'con'nected at its rear end to an arm42 secured upon one end of the bail 38', said spring being secured atits forward end to a bracket 43 mounted upon the framework. This springserves to assist, in lifting the b'eam 36 and the plow-body 35 relativeto the framework.

"The forward end of thel plow-beam 36 is held in position relative tothe forward end of the frame member 10 by means of a link the forwardend of which pivotally connected to thebea'm by means of'a pin 45 andthe rear end of which is pivoted by means of a pin orv bolt`46 passingthrough a bracket 47. The link 44 haspivotallyy connected to it at apoint intermediate of its ends a draft device 48 which inV turn isadapted to be conv nected'with any suitable source of power.

By the provision ofthe form and arrangement'of parts disclosed in thedrawings, in which` thenormal line of the link 44 between the pivot pins45v and 46 extends substantially vparallel with the ycrank portion ofthe'88',the angular position of the plow beam and the plow' carriedtherebyremains approximately constant as the plow-body isA raisedl and loweredrelative to theV frame fromv the position shown in Fig. 2 Yfor varying'th/edepth of plowing. W'hen, however, the' lever 39 is swung inclockwise direction, in Fig. 2, for raising the plow body' out ofoperativeengagement with the ground, the link 44 and bail' 38 cooperatein such a manner'as' to hold the forward end of the beam 36substantially in fixed position while the beam as ak whole practically`pivots about the pin 45, this result being attained by reason of thelink 44 being of greater length than the crank arm of the bail. 1t willalso be noticed thatwhen the plow is lifted from engagementwith the.ground, so as to pivot 4a'bout'the pin 45, as just stated, the point ofthe plow will be directed downwardly so as to facilitate its entranceinto the surface of the ground when the plow is again lowered by amovement of the lever 39i'n a contraclockwise direction; although itis'to beiunderstood that as soon as theplow. enters the gipund,l itassumesits normal plowing position and that by.' virtue 4of the positionof the link 44 with relation to the crank of the bail 38, as aboveexplained, the plow will be maintained in its normal angular positionrelative to the frame regardless of any adjustment of the plow to effectdeep or shal low plowing. By reason of the connection of the. draftdevice with the link between the frame l() and the beam 36 rather thanwith either of said parts to the exclusion of the other, the plow ismore readily moved relative to the frame than would bevthe case if theentire machine were drawn from the beam. l

1What l claim as'my invention and desire to sec-ure by Letters Patent,is?

l. ln a. listerv plow, the combination of a frame, a'crank bail on theframe normally extending atan angle to the vertical when the plow is initsnormal plowing position, a plow-beam'seCured tothe 'crank of the bailand movabley therewith up and down relative to said frame, a: plow bodycarried by said plow-beam, ya link normally extending in aline parallelwith the crank of said bail, said link being pivotally connectedfto saidplow-beam and: pivotally connected to said frame vat a point abov'eandto the rear of the point atwhich it is connectedl to said plow-beam, anda draft appliance connected to said link atl an intermediate pointtherealong.

2. 1n a listen plow, the combination of a frame, a plow-beam, a plowbody carried by said beam, acrank bail pivotally connecting anintermediate portionof said plow-beam withsaid frame, a link in thefront of said bail pivotallyl connecting said plowbeam with saidfraineandnormallyextending in a line parallel withfthe bail when the 'plow isin` normal plowing position, said link being substantially twice as long'as the crank of said vbail 'whereby the plow-beamv pivots aboutitsf'pivot with the link to permit the plow to be raised to the properheight above the ground and whereby, the plowpwhen'y so raised, `has itspoint extendingl downwardly to enter the ground, anda draft-,applianceconnected to said link between its ,pivotal connection .to said frameand said plow-beam for applyingpowerto both.l i'

3'.V In a lister plow, the combination of a frame, a plow-beam, aplow-body carried by said plow-beam, acrankbail pivotally connecting anintermediate portion of said plow-beam with said frame, and linkpivotally connectingthe forward end of said plow-beam withy said frameand extending substantially parallel with theI crank bail, said linkbeing of ugreater length than `the crank arm of said bail, and servingas, an evener between the beamy andY the'frame and as a means inconnection with the, bail for controlling the' suction of' thelplow-body and for insuring the plow-body being negato the proper heightfor they turning of the machine.

4. ln a lister plow, the combination of a frame, a crank bail on theframe and normally extending forwardly with a downward Slant when theplow is in normal plowing position, a plow-beam secured to the crank ofthe bail and movable therewith up and down relative to the frame, theforward end of the plow-beam being arranged to lie below he frame, aplow body carried by the plow-beam, a link normally extending parallelwith the crank of said bail and of greater length than said crank, saidlink being pivotally connected at its forward end to said beam andhaving its rear end portion pivotally connected to said frame at a pointabove and to the rear of its connections with said plowbeam, and meansfor rotating the crank bail.

ANDREl/V SHEARER.

Copie of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

